Ach, me too, mate. I see a Physio and attend Pilates classes for mine, it's really made a difference. Funnily enough, it's not cramped on the Seeley, unlike, say, the RGS. In truth I find the cafe riding position hurts my back less than the cruiser stance. Cove got an old Pan head which is quite cool but kills my back!
Cheers
ATg
P